(Thraupidae; Ϯ Sulphur-rumped Tanager H. rubrifrons) Gr. ἑτερος heteros different, another; σπιγγος spingos finch < σπιζω spizō to chirp; "Genus Heterospingus. (Type, Tachyphonus rubrifrons Lawrence.) Similar to Tachyphonus Vieillot, but nasal fossæ densely feathered, concealing the nostrils; tail relatively much shorter, wing more pointed, tarsus shorter (scarcely exceeding middle toe with claw), and sexes alike in color or nearly so in pattern of coloration." (Ridgway 1898).